I was wondering if anyone is able to suggest appropriate capacitor and resistor values for the construction of a new output stage (DC blocking/high pass filter after DAC) for a cd player going out to a standard line level preamp input?

And also (for an alternate more specific project) appropriate values going out to a 50K ohm preamp input?

Every commercial CD player either already has a coupling cap at the output or employs a DC servo to eliminate any DC on the output. Beyond that, for a simple coupling cap application where DC blocking is the only goal, the sky's the limit, use as large value that will physically fit. Most preamp inputs will have at least a 10 kohm impedance, and a corner frequency of around 2 Hz will eliminate any negative frequency or phase response effects. So using 10 kohm and 8 uF will give you a 2 Hz corner frequency.

Every commercial CD player either already has a coupling cap at the output or employs a DC servo to eliminate any DC on the output. Beyond that, for a simple coupling cap application where DC blocking is the only goal, the sky's the limit, use as large value that will physically fit. Most preamp inputs will have at least a 10 kohm impedance, and a corner frequency of around 2 Hz will eliminate any negative frequency or phase response effects. So using 10 kohm and 8 uF will give you a 2 Hz corner frequency.

Mike

Thanks for the info...

Its getting clearer now!!

You see i had modified a stage in the past with 22k resistors and 3.3uf caps going out to my preamps 50k input, and the volume level/gain in comparison to my other players was significantly less……do corresponding values have such effect on volume?

On my Oppo DV-980H DVD player which uses the Cirrus CS4361 DAC, I bypassed the opamp output stage by following the diagram in the datasheet for the CS4361 (fig attached). I used 7.5uF which I had onhand instead of the indicated 3.3uF, and I used 1nF for 'C'.

You see i had modified a stage in the past with 22k resistors and 3.3uf caps going out to my preamps 50k input, and the volume level/gain in comparison to my other players was significantly less……do corresponding values have such effect on volume?